一线: a thread; a ray of; a gleam ...三: three极: I the utmost point; extreme电炉: electric stove三极电炉: three-electrode furnace一线六极电炉: six electrode in line furnace三极电子管: radiotron三极电子枪: triode gun多极电炉: multiple-electrode furance; multiple-electrode furnace二极电炉: two-electrode furnace六极电炉: six electrode furnace斜极电炉: electric furnace with inclined electrode三极电信学校: ching yun university单相二极电炉: single phase two electrode furnace外接线三极管振荡器: external-line triode oscillator三极电子管放大器: triode amplifier栅极接地三极电路: grounded-grid triode circuit单相双电极电炉: one-phase two-electrode furnace一线: a thread; a ray of; a gleam of 云朵中的一线青天 a break in the clouds; 一线微弱的希望 a faint gleam of hope; 一线光明 a ray of light; 透过帘子的一线微光 a glimmer of light through the curtains三极: three pole; threepole; triple pole; triple-pole; tritet exciter; tritet oscillator电炉: 1.(取暖电炉) electric stove; hot plate2.[冶金学] electric furnace◇电炉钢 electric (furnace) steel; electrosteel; 电炉光谱 furnace spectrum; 电炉炼钢 electric furnace steel making线三角: wire triangle弧线三步: curving three step基线三角架: solid block降线三波的: cataricrotic